International Research Journal of Engineering and Technology (IRJET)
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A REVIEW ON COMPARATIVE STUDY OF DESIGN OF WATER TANKWITH
IS3370-1965 AND IS3370-2009
Parag R. Chopade1, Dr. P. O. Modani2
1PG
Student, Department of Civil Engineering, PankajLathad Institute of Technology and Management Studies,
Buldana, India.
2Asst. Prof. Department of Civil Engineering, PankajLathad Institute of Technology and Management Studies,
Buldana, India.
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Abstract - Indian standard has recently revised IS 3370 code of practice for concrete structures for storage of liquids. In that
provisions of code IS 3370: 1965, the method which is adopt for designing the water storage tank is working stress method only.
The new provision of IS 3370:2009 adopts both WSM and LSM. In this paper, comparison of the design provisions of water tank by
IS 3370:1965 and IS 3370:2009. In IS 3370:2009 limit state method considering two aspects mainly it limits the stress in steel and
limits the crack width.
Keywords - IS 3370:1965, IS 3370:2009, Working Stress Method, Limit State Method, Crack Width Theory
I. INTRODUCTION
TOP
DOME
TOP
RING
BEAM
Water is considered as the wellspring of each creation and
is in this manner an extremely pivotal component for
people to carry on with a solid life. Popularity of Clean and
safe drinking water is rising step by step as one can't live
without water. It ends up important to store water.
Adequate water conveyance relies upon structure of a
water tank in certain territory. A lifted water tank is an
expansive water stockpiling compartment built to hold
water supply at certain stature to pressurization the water
dispersion framework. Water tanks can be named
overhead, laying on ground or underground relying upon
their area. The tanks can be made of steel or cement. Steel
tanks are commonly utilized in railroad yards. Water tanks
laying on ground are ordinarily roundabout or rectangular
fit as a fiddle and are utilized where huge amounts of
water should be put away. Overhead water tanks are
utilized to circulate water specifically through gravity
stream and are ordinarily of littler limit. As the overhead
water tanks are available to general visibility, their shape
is affected by the stylish view in the environment. Round
tanks have least surface region when contrasted with
different shapes for a specific limit of capacity required.
Subsequently the amount of material required for round
water tank is not exactly required for different shapes. The
hoisted Water Tank (WT) comprises of tank upheld by
organizing framework made out of segments, supports and
establishments. Lifted water tanks have for the most part
performed well in a seismic zones. Because of the absence
of learning of supporting framework a portion of the water
tank were fell or intensely harmed. So there is have to
concentrate on seismic security of help structure as for
exchange supporting framework which are protected amid
quake.
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CYLINDRIC
ALWALL
BASE
SLAB
Fig.1.1 Components of Circular WaterTank
1.1 Basis of water tank - The primary parts of circular
water tank is top dome, top ring beam, barrel shaped
divider i.e. cylindrical wall, base slab. Top Dome is the best
most piece of tank. Top dome is intended for self weight
and live load. There are two sorts of stresses are following
up on arch which are called as meridional and
circumferential burdens and the thickness of vault is
depends up on premise of limit of tank. Structure of ring
pillar in water tank is important to oppose the flat segment
of the push of the arch. The ring pillar will likewise be
intended for the band pressure initiated. Round and
hollow tank divider is the component of superstructure
where it exchanges and controls the weight from best arch
and best ring shaft to down segment. The base piece ought
to be sufficiently able to transmit the heap from the fluid
and the structure itself to the ground. The base chunk
creates spiral and additionally circumferential pressure.
According to seismic code IS 1893 (part):2002, more than
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e-ISSN: 2395-0056
Volume: 06 Issue: 01 | Jan 2019
p-ISSN: 2395-0072
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60% of india is prone to earthquake. After an earthquake
property loss can be recovered to some extent however,
the life loss cannot the main reason for life loss is collapse
the structures. It is said that earthquake itself never kills
people, it is badly constructed structure that kill. Hence it
is important to analyze the structure properly for
earthquake effects.
3.2.1Limit State Design:-
II. OBJECTIVE
Limit state of collapse
Limit State Requirement
All relevant limit States shall be considered in the
design to ensure an adequate degree of safety and
serviceability.
1.
To check about design philosophy for safe design
of water tank.
The recommendations given in IS 456 shall be followed.
Limit states of serviceability
2.
To make the guidelines for the design of liquid
retaining structure according to IS code.
3.
To check economical design of water tank.
4.
To make the study about the analysis and design
of water tank.
a) Deflection - The limits of deflection shal1be as per IS
456.
b) Cracking- The maximum calculated surface width of
cracks for direct tension and flexure or restrained
temperature and moisture effects shall not exceed 0.2 mm
with specified cover.
5.
This report is to provide guidance in the design
and construction for Circular water tanks.
Partial safety factors
The recommendations given in IS 456 for partial safety
factor for servicebilityshall be followed.
III. METHODOLOGY
Basis of Design
3.1 FLOW CHART OF PROJECT
Design and detailing of reinforced concrete shall be as
specified in Section 5 of IS 456 except that 37.1.1 of IS 456
shall not apply.
Crack widths
Crack widths due to the temperature and moisture effects
shall be calculated as given in Annex A and that in mature
concrete shall be calculated as given in Annex B.
Crack widths for reinforced concrete members in direct
tension and flexural tension may be deemed to be
satisfactory if steel Stress under service conditions does
not exceed 115 N/mm2for plain bars and 130 N/mm2 for
high strength deformed bars.
3.2.2Working Stress Design
Basis of Design
The design of members shall be based on
adequate resistance to cracking and adequate strength.
Calculation of stresses shall be based on the following
assumptions:
a) At any cross-section plane section remains plane after
bending.
b) Both steel and concrete are perfectly elastic and the
modular ratio has the value given in IS 456.
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c) In calculation of stresses for both flexural and direct
tension (or combination of both) relating to resistance
to cracking the whole section of concrete including the
cover together with the reinforcement can be taken
into account provided the tensile stress in concrete is
limited
d) In strength calculations the concrete has no tensile
strength.
0.3
0.3
0.3
m
Permissible
stress of Steel
σ
st
150
130
230
N/
mm
2
N/
mm
σ
ct
Depth of water
In IS 3370:1965 design criteria adopts working stress
method and in revised version of IS 3370:2009 adopts
working stress method as well as limit state method with
crack width theory. IS:3370 adopted limit state design
method in 2009 with the following advantages - limit state
design method considers the materials according to their
properties , treats load according to their nature , the
structures also fails mostly under limit state and not in
elastic state and limit state method also checks for
serviceability. IS:3370-2009 adopts limit state design
method with precautions. It adopts the criteria for limiting
crack width when the structures are designed by
considering ultimate limit state and restricts the stresses
to 130 MPa in steel so that cracking width is not exceeded
this is considered to be deemed to be satisfy condition.
This precaution ensures cracking width to be less than 0.2
mm i.e. fit for liquid storage. This also specifies clearly how
a liquid storage structure differs with other structures. The
value of permissible stress in Steel (in direct tension,
bending and shear) in IS 3370: (1965) σst is 150 N/mm2
and in IS 3370: (2009) σst is 130 N/mm2.
2
1.2
1.5
2
2.7
2.7
2.7
m
Area of water
tank
A
185.18
185.18
518
185.18
m2
Diameter
D
16
16
16
m
Radius
r
8
8
8
m
r
2
2
2
m
R
17
17
17
m
θ
0.49
0.49
0.49
rad
28.08
28.08
28.08
deg
DESIGN OF TOP
DOME
Rise of dome
Radius of
curvature
Semicentral
angle
Total load
W
3.5
3.5
3.5
kN/
m
Meridional
thrust
T
31.61
31.61
31.61
kN
0.32
0.32
0.32
N/
mm
Meridional stress
IV. PERFORMANCE ANALYSIS
2
Circumferential
force
4.1 Design of circular water tank of capacity 5 lakh litre
resting on ground and having rigid joint at base. Depth of
tank is 3 m with a free board of 0.3m. Use M20 grade of
concrete and Fe415 grade of steel. Using WSM (1.IS 3370:
1965,2.IS 3370: 2009,)Using LSM. (1.IS 3370: 1965,
2.IS 3370: 2009,)
1965
(WSM)
2009(
WSM)
2009
(LSM)
UNI
T
50000
0
50000
0
50000
0
lit
Volume
V
500
500
500
m3
Depth of water
tank
H
3
3
3
m
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C
Circumferential
Stress
Table 4.1 DESIGN COMPARISION
Capacity
F.
B
Permissible
stress in
concrete
3.3 Major Variations In IS 3370: 1965 and IS 3370:
2009
DIMENSION OF
WATER TANK
Free board
20.89
20.89
kN
0.21
0.21
0.21
N/
mm
2
Area of steel
A
st
300
175
120
Spacing
S
167.46
287.08
418.66
mm
DIMENSION OF
WATER TANK
DESIGN OF RING
BEAM
Horizontal
P
component
|
20.89
mm
2
1965
(WSM)
2009(
WSM)
2009
(LSM)
UNI
T
27.89
27.89
27.89
kN
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Hoop tension
Area of steel
Dimension of
ring beam
Width of ring
beam
Depth of ring
beam
CYLINDRICAL
WALL
Intensity of
water
pressure at
base
Hoop tension
Area of steel
H.
T.
As
t
223.12
5
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223.12
5
167596
.625
223.12
5
1716.3
4
127587
.4519
b
300
300
300
mm
d
558.65
425.29
332.00
mm
1487.5
970.10
REFERENCES
kN
1) M Bhandari and Karan deep Singh, “Comparative
Study of Design of water Tank with Reference to
IS: 3370”, IJETAE Publication, Vol-4,Issue-11,
November 2014.
mm
2
99601.
05978
2) Ranjit Singh, Dr.Abhay Sharma and Dr.VivekGarg,
“Design of Intze Tank in Perspective of Revision of
IS: 3370,”IJSET Publication, Vol-3, Issue09,1September2014.
3) R.V.R.K.Prasad, AkshayaB.Kamdi, “Effect of
Revision of IS 3370 on Water Storage Tank”,
International Journal of Engineering Research and
Applications 2(5), 2012.
P
H.
T.
As
t
29.43
29.43
29.43
kN/
m2
235.44
235.44
235.44
kN
1569.6
1811.0
76923
1023.6
52174
mm
4) Dr.SuchitaHirde, AsmitaBajare and Dr. Manoj
Hedaoo, “Seismic performance of Elevated Water
Tank”, International Journal of Advanced
Engineering Research and Studies Vol.I, 2011.
5) IITK-GSDMA guidelines for seismic design of
liquid storage tanks.
2
Width of wall
b
1000
1000
1000
mm
Thickness of
wall
t
176.84
134.62
105.09
mm
6) Durgesh C. Rai and Bhumika Singh, “Seismic
Design of Concrete Pedestal Supported Tanks”
13th
World
Conference on
Earthquake
Engineering Vancouver, B.C, Canada August 1-6,
2004
7) Ayazhussain M. Jabar and H. S. Patel, “Seismic
Behavior of RC Elevated Water Tank under
Different Staging Pattern and Earthquake
Characteristics”.
International
Journal
of
Advanced Engineering Research and Studies EISSN2249–8974, IJAERS, Vol. I, Issue III, AprilJune, 2012 293-296
BASE SLAB
Thickness of
base slab
t
200
200
300
Reinforcement
As
t
600
600
900
Spacing
S
130.83
130.83
87.22
mm
mm
2
mm
8) Mohammad
TaghiAhmadi,
AfshinKalantari,
“Modeling of Elevated Water Tank Under Seismic
Excitation Considering Interaction of Water and
Structure”, Structural Engineering Forum of India,
2002.
CONCLUSION
.Circular water tank is designed by two methods
WSM and LSM by two IS codes 3370: 1965 and revised
version 3370: 2009. Design of water tank by IS 3370: 1965
adopts only WSM whereas IS 3370: 2009 adopts both
WSM and LSM. As per design results circular water tank by
IS 3370: 2009 by limit state method is most economical as
compared to IS 3370:1965 (WSM) and IS 3370: 2009
(WSM).
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9) Praveen K. Malhotra, Thomas Wenk, Martin
Wieland, “Simple Procedure for Seismic Analysis
of Liquid Storage Tank”, Structural Engineering
International 3/2000, 197-201.
10) G.P.Deshmukh and Ankush.S.Patekhed,”Analysis of
Elevated Water Storage Structure using Different
Staging System”, IJRET Publication Vol-4, Issue-4,
April 2015.
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e-ISSN: 2395-0056
Volume: 06 Issue: 01 | Jan 2019
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11) Pawan S. Ekbote, Dr.Jagdish G. Kori, “Seismic
Behaviour of RC Elevated Water Tank Under
Different Types of Staging Pattern”. Journal of
Engineering, Computers & Applied Sciences, 2(8),
23-29.
12) IS 3370 (Part 1) and (Part 2):1965 “Concrete
Structure For Storage Of Liquids- Code of
Practice”, Bureau of Indian Standard, New Delhi.
13) IS 3370 (Part 4):1967 “Concrete Structure For
Storage Of Liquids-Code of Practice”, Bureau of
Indian Standard, New Delhi.
14) IS 3370 (Part 1) and (Part 2):2009 “Concrete
Structure For Storage Of Liquids-Code Of
Practice”, Bureau of Indian Standard, New Delhi.
15) IS 456:2000 “Plain And Reinforced Concrete –
Code Of Practice”, 4th revision, Bureau of Indian
Standard, New Delhi.
16) IS: 1893-2002 (Part II) "Criteria for Earthquake
Resistant Design of Structure (Liquid Retaining
Tanks)", Bureau of Indian Standards, New Delhi.
17) RCC Designs by Dr. B C Punmia, Ashok Kumar Jain
and Arun Kumar Jain, tenth edition, Laxmi
Publication.
18) “Advance Reinforced
Edition N. Raju
Concrete
Design”
2nd
19) Sneha S. Shende, Sanjay Bhadke, Amey R.
Khedikar“Comparative study of design of water
tank with new provision”, International Journal of
Current
Trends
in
Engineering
& Research (IJCTER) e-ISSN 2455–1392 Volume 2
Issue 4, April 2016 pp. 481 - 485
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